package com.itheima.action;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;

import org.springframework.data.domain.Page;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

public class BaseAction<T> extends ActionSupport implements ModelDriven<T> {

	protected T model;

	@Override
	public T getModel() {
		// TODO Auto-generated method stub
		return model;
	}

	public BaseAction() {
		// 这里的this是继承这个类的子类对象
		Type type = this.getClass().getGenericSuperclass();
		// 获取类型第一个泛型参数
		ParameterizedType parameterizedType = (ParameterizedType) type;
		Class<T> modelClass = (Class<T>) parameterizedType
				.getActualTypeArguments()[0];
		try {
			model = modelClass.newInstance();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			System.out.println("模型构造失败");
		}
	}
	
	
	//创造接受分页参数的方法
	protected int page;
	protected int rows;

	public void setPage(int page) {
		this.page = page;
	}

	public void setRows(int rows) {
		this.rows = rows;
	}
	protected void pushPageResults(Page<T> pageData){
		Map<String,Object> result = new HashMap<String,Object>();
		result.put("total", pageData.getTotalElements());
		result.put("rows", pageData.getContent());
		ActionContext.getContext().getValueStack().push(result);
	}
}
